Probable Association of T Tauri Stars with the L 1014 Dense Core

Autor:	Koji Sugitani, Motohide Tamura, Mariko Uehara, Yoichi Itoh, Kenzo Kinugasa, Takashi Hasegawa, Chie Nagashima, Noboru Ebizuka, Atsuko Morita, Makoto Watanabe
Jazyk:	angličtina
Rok vydání:	2006
Předmět:	Physics Extinction (astronomy) Astrophysics (astro-ph) FOS: Physical sciences Astronomy and Astrophysics Astrophysics Stellar classification Stars Photometry (astronomy) T Tauri star Space and Planetary Science Protostar Emission spectrum Spectroscopy
Zdroj:	Publications of the Astronomical Society of Japan. 58(5):L41-L45
ISSN:	0004-6264
Popis:	Using the Wide Field Grism Spectrograph 2 (WFGS2), we have carried out slit-less spectroscopy, g'r'i' photometry, and slit spectroscopy on the L1014 dense core. We detected three Halpha emission line stars. We interpret one as weak-line T Tauri star (WTTS) and the others as classical T Tauri stars (CTTS). Since their g'-i' colors and/or classified spectral types are consistent with those of T Tauri stars and two of them show less extinction than the cloud, these three stars are likely to be T Tauri stars associated with L1014. Adopting an age range for T Tauri stars, 1-10 Myr, the color-magnitude diagram suggests a distance of ~400-900 pc, rather than the previously assumed distance, 200 pc. This could strongly affect on the mass estimate of L1014-IRS, which is thought to be either a very young protostar or proto-brown dwarf. Comment: 5 pages, 5 figures, to be published in Vol.58, No.5, October 25, 2006
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2b7685af1f15426ae2a727a73c15387 https://hdl.handle.net/20.500.14094/90001430 Zobrazit plný text záznamu